What Is Option Premium? Definition & Example

Why It Matters

Every options metric you care about — return on capital, breakeven, probability of profit — is derived from the premium you collect or pay. Understanding the intrinsic/extrinsic split tells you what you're actually paying for (or harvesting).

How It Works

Premium = intrinsic value + extrinsic value. Intrinsic is the in-the-money amount (zero for OTM options). Extrinsic is everything else: time, volatility, rates, dividends. IV is the dominant extrinsic driver. When IV rank is high (>50), extrinsic is inflated — prime time for premium sellers.

Example

A SPY $580 put trades at $6.40 with SPY at $600. Intrinsic = $0 (20 points OTM). Extrinsic = $6.40 — all time and volatility. If SPY stays above $580 through expiration, that entire $6.40 decays to zero. That decay is the premium seller's profit.

Common Mistakes

Buying deep-ITM options thinking you got 'a lot of premium.' A $25 call with $22 intrinsic only has $3 of extrinsic — you're paying mostly for stock exposure, not optionality. Check the intrinsic/extrinsic split before evaluating any premium.

Related Terms

DTE (Days to Expiration)

Enter at 30–45 DTE for optimal theta/gamma balance. Close or roll at 21 DTE or 50% profit — whichever comes first.

Assignment

Not a disaster — it's the plan in the wheel strategy. If you only sell puts on stocks you'd own, assignment is just the next step.

Roll (Rolling)

Roll for a net credit or don't roll at all. Rolling for a debit just delays a loss. Best done before the position goes deep ITM.

Annualized Return

Looks impressive but is misleading if you ignore losses. Track actual account returns, not annualized returns on winners only.

Breakeven

Always know your breakeven before entering. If the stock can realistically reach it, either widen the margin or skip the trade.

Bid-Ask Spread

Wide bid-ask = hidden cost on every trade. Stick to liquid underlyings where the spread is under 5% of the option price.

Frequently Asked Questions